Journal of Discourses 12:339; “The very first man who had dominion on the face of the earth, under the direction of the Heavens, once dwelt on this Continent. His name was Adam. Whether his first residence was on this land, whether the garden that was planted for his occupation was on this Continent, or some other, is not revealed in any written or printed revelation. But he certainly did, in the course of his lifetime, either from this being his native land, or by emigration, actually come in possession of this part of the globe…” – Orson Pratt
Genesis 2:15; “And the LORD God took the man, and put him into the garden of Eden to dress it and to keep it.”
While no one has “discovered” the actual Garden of Eden we know from scripture it is near the Assyrian province of Thelassur (Isaiah 37:12, 2 Kings 19:12). The book of Ezekiel (27:23) also mentions Eden which is located on the Euphrates.